Step 1) Go to Transaction >Services.
Step 2) Select the Outward Services Entry.
Step 3) Click on Add (Alt + A).
Step 4) After that select Party in the transactions and then after that Open a new Account regarding services and add in Income as Direct Income or Other Income and then select the HSN/SAC code there and save the account.
Step 5) Then after selecting Income Account and selecting GST Applicable? Yes.
Step 6) And Enter Amount Press Enter Open the Combo and check GST amount and then save.
Step 7) Press Save (F2)